Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 5
Grade 8 science practice based on published U.S. learning expectations, with reproducible original variations. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Science Concepts and Evidence
Grade 8 · On-level practice · 8 questions · Version PG-UGM7GD-N8EZ
What do like electric charges do?A. Conduction B. Total mass is conserved C. The number of cycles per unit time D. Repel
How is mass affected in a closed-system reaction?A. Total mass is conserved B. Repel C. Formation of a new substance D. Conduction
What does Newton's second law relate?A. Speed with direction B. Force, mass, and acceleration C. Repel D. They rearrange into new substances
What is velocity?A. The number of cycles per unit time B. Force, mass, and acceleration C. Conduction D. Speed with direction
What is a wave's frequency?A. Force, mass, and acceleration B. The number of cycles per unit time C. They rearrange into new substances D. Speed with direction
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Force, mass, and acceleration C. Total mass is conserved D. Speed with direction
What transfers thermal energy by direct contact?A. Speed with direction B. Conduction C. They rearrange into new substances D. Force, mass, and acceleration
What is evidence of a chemical change?A. Total mass is conserved B. They rearrange into new substances C. Speed with direction D. Formation of a new substance
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 5
- What do like electric charges do?Repel
- How is mass affected in a closed-system reaction?Total mass is conserved
- What does Newton's second law relate?Force, mass, and acceleration
- What is velocity?Speed with direction
- What is a wave's frequency?The number of cycles per unit time
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What transfers thermal energy by direct contact?Conduction
- What is evidence of a chemical change?Formation of a new substance
Worked example
Read the direction, identify the assessed skill, solve or cite evidence, and check the response.
Common mistake
Using a memorized procedure without checking what the question asks.
Helpful hint
Name the standard skill before answering.